What does a "brake test" ensure during train operations?

A "brake test" is a critical procedure in train operations that ensures the train's braking system is functioning properly. This test typically involves verifying that the brakes engage and release correctly and that their performance meets safety standards. It is essential for ensuring the safety of passengers and crew by confirming that the train can stop effectively in an emergency situation or under normal operating conditions.

This procedure is a fundamental aspect of ensuring operational safety and is mandated by regulatory authorities. Conductors and engineers perform brake tests before departing a station or during predefined intervals to maintain the reliability of the braking system throughout the journey.

While being on schedule, having enough fuel, and ensuring that lights are operational are important aspects of train operations, they do not directly pertain to the critical function that the brake test serves in maintaining safety and compliance standards in railway operations.